/* $begin forkprob7 */
#include "csapp.h"

int counter = 1;

int main() {
    if (fork() == 0) {
        counter--;
        printf("child counter = %d\n", counter);
        exit(0);
    } else {
        Wait(NULL);
        printf("counter = %d\n", ++counter);
    }
    exit(0);
}
/* $end forkprob7 */
